<template>
  <div class="container">
    <div class="left-board">
      <div class="logo-wrapper">
        <!--        <el-radio-group v-model="tabPosition" style="margin-left: 30px;">-->
        <!--          <el-radio-button label="pcTab" size="mini">pc表单</el-radio-button>-->
        <!--          <el-radio-button label="mobileTab" siza="mini">移动表单</el-radio-button>-->
        <!--        </el-radio-group>-->
      </div>
      <el-scrollbar class="left-scrollbar">
        <div class="components-list">
          <div v-for="(item, listIndex) in leftComponents" :key="listIndex">
            <div class="components-title">
              <svg-icon icon-class="component" />
              {{ item.title }}
            </div>
            <draggable
              class="components-draggable"
              :list="item.list"
              :group="{ name: 'componentsGroup', pull: 'clone', put: false }"
              :clone="cloneComponent"
              draggable=".components-item"
              :sort="false"
              @end="onEnd"
            >
              <div
                v-for="(element, index) in item.list"
                :key="index"
                class="components-item"
                @click="addComponent(element)"
              >
                <div class="components-body">
                  <svg-icon :icon-class="element.__config__.tagIcon" />
                  {{ element.__config__.label }}
                </div>
              </div>
            </draggable>
          </div>
        </div>
      </el-scrollbar>
    </div>

    <div class="center-board">
      <div class="action-bar">
        <el-button icon="el-icon-check" type="text" @click="saveFormData">
          保存
        </el-button>
        <el-button
          icon="el-icon-s-promotion"
          type="text"
          @click="saveAndPublishFormData"
        >
          保存并发布
        </el-button>
        <el-button
          icon="el-icon-position"
          v-if="formConf.id > 0"
          type="text"
          @click="publishFormData"
        >
          发布
        </el-button>
        <el-button icon="el-icon-view" type="text" @click="showJson">
          查看json
        </el-button>
        <el-button icon="el-icon-edit" type="text" @click="execRun">
          设置脚本
        </el-button>
        <el-button icon="el-icon-download" type="text" @click="download">
          导出vue文件
        </el-button>
        <el-button
          class="copy-btn-main"
          icon="el-icon-document-copy"
          type="text"
          @click="copy"
        >
          复制代码
        </el-button>
        <el-button
          class="delete-btn"
          icon="el-icon-delete"
          type="text"
          @click="empty"
        >
          清空
        </el-button>
      </div>
      <el-scrollbar class="center-scrollbar">
        <el-row class="center-board-row" :gutter="formConf.gutter">
          <el-form
            :size="formConf.size"
            :label-position="formConf.labelPosition"
            :disabled="formConf.disabled"
            :label-width="formConf.labelWidth + 'px'"
          >
            <draggable
              class="drawing-board"
              :list="drawingList"
              :animation="340"
              group="componentsGroup"
            >
              <draggable-item
                v-for="(element, index) in drawingList"
                :key="element.renderKey"
                :drawing-list="drawingList"
                :element="element"
                :index="index"
                :active-id="activeId"
                :form-conf="formConf"
                @activeItem="activeFormItem"
                @copyItem="drawingItemCopy"
                @addItem="addItemCopy"
                @selectItem="selectItem"
                @deleteItem="drawingItemDelete"
              />
            </draggable>
            <div v-show="!drawingList.length" class="empty-info">
              从左侧拖入或点选组件进行表单设计
            </div>
          </el-form>
        </el-row>
      </el-scrollbar>
    </div>
    <right-panel
      :active-data="activeData"
      :form-conf="formConf"
      :show-field="!!drawingList.length"
      @tag-change="tagChange"
    />
    <js-drawer
      :visible.sync="drawerVisible"
      v-if="drawerVisible"
      v-model="formData.jsStr"
      size="60%"
      @on-refresh="updateJs"
    />
    <json-drawer
      size="60%"
      :visible.sync="jsonDrawerVisible"
      :json-str="JSON.stringify(formData)"
      @refresh="refreshJson"
    />
    <code-type-dialog
      :visible.sync="dialogVisible"
      title="选择生成类型"
      :show-file-name="showFileName"
      @confirm="generate"
    />
    <input id="copyNode" type="hidden" />
  </div>
</template>

<script>
import draggable from "vuedraggable";
import { debounce } from "throttle-debounce";
import { saveAs } from "file-saver";
import ClipboardJS from "clipboard";
import render from "@/components/form-designer/render/render";
import JsDrawer from "./JsDrawer";
import JsonDrawer from "./JsonDrawer";
import RightPanel from "./RightPanel";
import {
  inputComponents,
  selectComponents,
  mobileComponents,
  layoutComponents,
  formConf
} from "@/components/form-designer/generator/config";
import {
  exportDefault,
  beautifierConf,
  isNumberStr,
  titleCase,
  deepClone
} from "@/components/form-designer/utils/index";
import {
  makeUpHtml,
  vueTemplate,
  vueScript,
  cssStyle
} from "@/components/form-designer/generator/html";
import { makeUpJs } from "@/components/form-designer/generator/js";
import { makeUpCss } from "@/components/form-designer/generator/css";
import drawingDefalut from "@/components/form-designer/generator/drawingDefalut";
import logo from "@/assets/logo.png";
import CodeTypeDialog from "./CodeTypeDialog";
import DraggableItem from "./DraggableItem";
import {
  getDrawingList,
  saveDrawingList,
  getIdGlobal,
  saveIdGlobal,
  getFormConf
} from "@/components/form-designer/utils/db";
import loadBeautifier from "@/components/form-designer/utils/loadBeautifier";

let beautifier;
const emptyActiveData = {
  style: {},
  autosize: {}
};
let oldActiveId;
let tempActiveData;
const drawingListInDB = getDrawingList();
const formConfInDB = getFormConf();
const idGlobal = getIdGlobal();
//添加元素到指定位置
Array.prototype.add = function(val, index) {
  if (index > -1) {
    this.splice(index, 0, val);
  }
};
export default {
  components: {
    draggable,
    render,
    JsDrawer,
    JsonDrawer,
    RightPanel,
    CodeTypeDialog,
    DraggableItem
  },
  data() {
    return {
      flowId: "",
      operate: "create",
      tabPosition: "pcTab",
      logo,
      idGlobal,
      formConf,
      inputComponents,
      selectComponents,
      layoutComponents,
      mobileComponents,
      labelWidth: 100,
      drawingList: drawingDefalut,
      drawingData: {},
      activeId: drawingDefalut[0].formId,
      drawerVisible: false,
      formData: {},
      dialogVisible: false,
      jsonDrawerVisible: false,
      generateConf: null,
      showFileName: false,
      activeData: drawingDefalut[0],
      saveDrawingListDebounce: debounce(340, saveDrawingList),
      saveIdGlobalDebounce: debounce(340, saveIdGlobal),
      leftComponents: [
        {
          title: "输入型组件",
          list: inputComponents
        },
        {
          title: "选择型组件",
          list: selectComponents
        },
        {
          title: "移动端组件",
          list: mobileComponents
        },
        {
          title: "布局型组件",
          list: layoutComponents
        }
      ]
    };
  },
  computed: {},
  watch: {
    // eslint-disable-next-line func-names
    "activeData.__config__.label": function(val, oldVal) {
      if (
        this.activeData.placeholder === undefined ||
        !this.activeData.__config__.tag ||
        oldActiveId !== this.activeId
      ) {
        return;
      }
      this.activeData.placeholder =
        this.activeData.placeholder.replace(oldVal, "") + val;
    },
    activeId: {
      handler(val) {
        oldActiveId = val;
      },
      immediate: true
    },
    drawingList: {
      handler(val) {
        this.saveDrawingListDebounce(val);
        if (val.length === 0) this.idGlobal = 100;
      },
      deep: true
    },
    idGlobal: {
      handler(val) {
        this.saveIdGlobalDebounce(val);
      },
      immediate: true
    }
  },
  created() {
    let formId = this.$route.query.formId;
    let operate = this.$route.query.operate;
    if (formId) {
      this.formId = formId;
    }
    if (operate) {
      this.operate = operate;
    }
  },
  mounted() {
    this.initLoad();

    this.activeFormItem(this.drawingList[0]);
    loadBeautifier(btf => {
      beautifier = btf;
    });
    const clipboard = new ClipboardJS("#copyNode", {
      text: trigger => {
        const codeStr = this.generateCode();
        this.formConf.fields = this.drawingList;
        this.$notify({
          title: "成功",
          message: "代码已复制到剪切板，可粘贴。",
          type: "success"
        });
        return codeStr;
      }
    });
    clipboard.on("error", e => {
      this.$message.error("代码复制失败");
    });
  },
  methods: {
    // 初始化
    initLoad() {
      if (this.formId && this.operate === "update") {
        // 编辑
        this.API.getWorkflowFormById({ id: this.formId }).then(res => {
          this.drawingList =
            deepClone(res.data.fields) === undefined
              ? []
              : deepClone(res.data.fields);
          delete res.data.fields;
          this.formConf = res.data;
          console.log(this.formConf);
        });
      } else {
        this.drawingList = drawingDefalut;
      }
    },
    activeFormItem(element) {
      this.activeData = element;
      this.activeId = element.__config__.formId;
      if (this.activeData.__config__.jsClass === undefined) {
        this.$set(this.activeData.__config__, "jsClass", "");
      }
      if (this.activeData.__config__.regBefore === undefined) {
        this.$set(this.activeData.__config__, "regBefore", "");
      }
    },
    onEnd(obj) {
      console.log(1111111111);
      if (obj.from !== obj.to) {
        this.activeData = tempActiveData;
        this.activeId = this.idGlobal;
      }
    },
    addComponent(item) {
      console.log(222222222);
      const clone = this.cloneComponent(item);
      this.drawingList.push(clone);
      this.activeFormItem(clone);
      console.log(item, 333333334455);
    },
    cloneComponent(origin) {
      const clone = deepClone(origin);
      const config = clone.__config__;
      config.span = this.formConf.span; // 生成代码时，会根据span做精简判断
      this.createIdAndKey(clone);
      clone.placeholder !== undefined && (clone.placeholder += config.label);
      tempActiveData = clone;
      console.log(tempActiveData, "222222");
      return tempActiveData;
    },
    createIdAndKey(item) {
      const config = item.__config__;
      config.formId = ++this.idGlobal;
      config.renderKey = +new Date(); // 改变renderKey后可以实现强制更新组件
      if (config.layout === "szFormItem") {
        config.componentName = `szFormItem${this.idGlobal}`;
        !Array.isArray(config.children) && (config.children = []);
        delete config.label; // rowFormItem无需配置label属性
      } else if (config.layout === "szForm") {
        config.componentName = `szForm${this.idGlobal}`;
        !Array.isArray(config.children) && (config.children = []);
        delete config.label; // rowFormItem无需配置label属性
      } else if (config.layout === "colFormItem") {
        if (!item.__config__.__vModel__) {
          item.__vModel__ = `field${this.idGlobal}`;
        }
      } else if (config.layout === "rowFormItem") {
        config.componentName = `row${this.idGlobal}`;
        !Array.isArray(config.children) && (config.children = []);
        delete config.label; // rowFormItem无需配置label属性
      } else if (config.layout === "tableFormItem") {
        config.componentName = `table${this.idGlobal}`;
        !Array.isArray(config.children) && (config.children = []);
        delete config.label; // tableFormItem无需配置label属性
      } else if (config.layout === "trFormItem") {
        config.componentName = `tr${this.idGlobal}`;
        !Array.isArray(config.children) && (config.children = []);
        delete config.label; // trFormItem无需配置label属性
      } else if (config.layout === "tdFormItem") {
        config.componentName = `td${this.idGlobal}`;
        !Array.isArray(config.children) && (config.children = []);
        delete config.label; // tdFormItem
      } else if (config.layout === "labelItem") {
        config.componentName = `label${this.idGlobal}`;
        !Array.isArray(config.children) && (config.children = []);
        delete config.label; // labelItem
      }
      if (Array.isArray(config.children)) {
        config.children = config.children.map(childItem =>
          this.createIdAndKey(childItem)
        );
      }
      return item;
    },
    AssembleFormData() {
      this.formData = {
        fields: deepClone(this.drawingList),
        ...this.formConf
      };
    },
    generate(data) {
      const func = this[`exec${titleCase(this.operationType)}`];
      this.generateConf = data;
      func && func(data);
    },
    execRun(data) {
      this.AssembleFormData();
      this.drawerVisible = true;
      // console.log(this.formData.jsStr)
    },
    execDownload(data) {
      const codeStr = this.generateCode();
      const blob = new Blob([codeStr], { type: "text/plain;charset=utf-8" });
      saveAs(blob, data.fileName);
    },
    execCopy(data) {
      document.getElementById("copyNode").click();
    },
    empty() {
      this.$confirm("确定要清空所有组件吗？", "提示", { type: "warning" }).then(
        () => {
          this.drawingList = [];
          this.idGlobal = 100;
        }
      );
    },
    // 复制一个，在最后
    drawingItemCopy(item, parent) {
      let clone = deepClone(item);
      clone = this.createIdAndKey(clone);
      parent.push(clone);
      this.activeFormItem(clone);
    },
    // 追加一个，紧邻当前
    addItemCopy(item, parent) {
      let clone = deepClone(item);
      clone = this.createIdAndKey(clone);
      let curIndex = parent.findIndex((itemTem, index, parent) => {
        return itemTem.__config__.formId == item.__config__.formId;
      });
      parent.add(clone, curIndex + 1);
      this.activeFormItem(clone);
    },

    // tr 的选中，展示右侧面板
    selectItem(item, parent) {
      console.log(item, parent);
      this.activeData = item;
    },
    drawingItemDelete(index, parent) {
      parent.splice(index, 1);
      this.$nextTick(() => {
        const len = this.drawingList.length;
        if (len) {
          this.activeFormItem(this.drawingList[len - 1]);
        }
      });
    },
    generateCode() {
      const { type } = this.generateConf;
      this.AssembleFormData();
      const script = vueScript(makeUpJs(this.formData, type));
      const html = vueTemplate(makeUpHtml(this.formData, type));
      const css = cssStyle(makeUpCss(this.formData));
      return beautifier.html(html + script + css, beautifierConf.html);
    },
    showJson() {
      this.AssembleFormData();
      this.jsonDrawerVisible = true;
    },
    download() {
      this.dialogVisible = true;
      this.showFileName = true;
      this.operationType = "download";
    },
    // 保存表单信息
    saveFormData() {
      this.$confirm("是否保存当前表单?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      })
        .then(() => {
          this.formConf.fields = this.drawingList;
          this.API.saveWorkflowForm({ body: this.formConf }).then(res => {
            this.success("保存成功!");
            this.operate = "update";
            // todo 刷新
            // this.formId = res.data.formId
            // this.initLoad()
          });
        })
        .catch(() => {
          this.info("已取消");
        });
    },
    // 发布表单信息
    publishFormData() {
      this.$confirm("是否发布当前表单?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      })
        .then(() => {
          if (
            this.formConf.id === null ||
            this.formConf.id === undefined ||
            this.formConf.id < 1
          ) {
            this.warning("当前状态不允许发布");
            return;
          }
          this.formConf.fields = this.drawingList;
          this.API.publishWorkflowFormById({ id: this.formConf.id }).then(
            res => {
              this.success("保存成功!");
            }
          );
        })
        .catch(() => {
          this.info("已取消");
        });
    },
    // 保存并发布表单信息
    saveAndPublishFormData() {
      this.$confirm("是否保存并发布当前表单?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      })
        .then(() => {
          this.formConf.fields = this.drawingList;
          this.API.saveAndPublishWorkflowForm({ body: this.formConf }).then(
            res => {
              this.success("保存成功!");
            }
          );
        })
        .catch(() => {
          this.info("已取消");
        });
    },
    copy() {
      this.dialogVisible = true;
      this.showFileName = false;
      this.operationType = "copy";
    },
    tagChange(newTag) {
      newTag = this.cloneComponent(newTag);
      const config = newTag.__config__;
      newTag.__vModel__ = this.activeData.__vModel__;
      config.formId = this.activeId;
      config.span = this.activeData.__config__.span;
      Object.assign(this.activeData.__config__, config);
      this.activeData.__config__.tag = config.tag;
      this.activeData.__config__.tagIcon = config.tagIcon;
      this.activeData.__config__.document = config.document;
      if (
        typeof this.activeData.__config__.defaultValue ===
        typeof config.defaultValue
      ) {
        config.defaultValue = this.activeData.__config__.defaultValue;
      }
      Object.keys(newTag).forEach(key => {
        if (this.activeData[key] !== undefined) {
          newTag[key] = this.activeData[key];
        }
      });
      this.activeData = newTag;
      this.updateDrawingList(newTag, this.drawingList);
    },
    updateDrawingList(newTag, list) {
      const index = list.findIndex(
        item => item.__config__.formId === this.activeId
      );
      if (index > -1) {
        list.splice(index, 1, newTag);
      } else {
        list.forEach(item => {
          if (Array.isArray(item.__config__.children))
            this.updateDrawingList(newTag, item.__config__.children);
        });
      }
    },
    refreshJson(data) {
      this.drawingList = deepClone(data.fields);
      delete data.fields;
      this.formConf = data;
    },
    /**
     * 描述：js 脚本更新
     * 时间： 2021/1/14
     */
    updateJs(js) {
      if (this.formData.jsStr) {
        this.formData.jsStr = js;
      } else {
        this.$set(this.formData, "jsStr", js);
      }
      this.formConf = this.formData;
    }
  }
};
</script>

<style lang="scss">
@import "../../components/form-designer/styles/home";

.label_default {
  text-align: center;
  color: red;
  font-size: 14px;
}

.text_default {
  text-align: center;
  color: red;
  font-size: 18px;
  font-weight: bold;
}
.mobile-form {
  position: absolute;
  left: 50%;
  top: 0;
  height: 100%;
  width: 492px;
  margin-left: -251px;
  background: url(./icons/phone-bg.png) no-repeat top center;
  .form-body {
    position: absolute;
    overflow-x: hidden;
    overflow-y: auto;
    left: 47px;
    top: 106px;
    right: 46px;
    bottom: 0;
    max-height: 688px;
    background: #f0eff4;
  }
}
</style>
